/* * Copyright (C) 2011 Michael Niedermayer (michaelni@gmx.at) * * This file is part of libswresample * * libswresample is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * libswresample is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with libswresample; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef SWR_INTERNAL_H #define SWR_INTERNAL_H #include "swresample.h" typedef struct AudioData{ uint8_t *ch[SWR_CH_MAX]; uint8_t *data; int ch_count; int bps; int count; int planar; } AudioData; typedef struct SwrContext { //FIXME find unused fields const AVClass *av_class; int log_level_offset; void *log_ctx; enum AVSampleFormat in_sample_fmt; enum AVSampleFormat int_sample_fmt; ///<AV_SAMPLE_FMT_FLT OR AV_SAMPLE_FMT_S16 enum AVSampleFormat out_sample_fmt; int64_t in_ch_layout; int64_t out_ch_layout; int in_sample_rate; int out_sample_rate; int flags; float slev, clev, rematrix_volume; //below are private int int_bps; int resample_first; int rematrix; ///< flag to indicate if rematrixing is used AudioData in, postin, midbuf, preout, out, in_buffer; int in_buffer_index; int in_buffer_count; int resample_in_constraint; struct AVAudioConvert *in_convert; struct AVAudioConvert *out_convert; struct AVAudioConvert *full_convert; struct AVResampleContext *resample; float matrix[SWR_CH_MAX][SWR_CH_MAX]; int32_t matrix32[SWR_CH_MAX][SWR_CH_MAX]; uint8_t matrix_ch[SWR_CH_MAX][SWR_CH_MAX+1]; //TODO callbacks for asm optims }SwrContext; struct AVResampleContext *swr_resample_init(struct AVResampleContext *, int out_rate, int in_rate, int filter_size, int phase_shift, int linear, double cutoff); void swr_resample_free(struct AVResampleContext **c); int swr_multiple_resample(struct AVResampleContext *c, AudioData *dst, int dst_size, AudioData *src, int src_size, int *consumed); void swr_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance); int swr_resample(struct AVResampleContext *c, short *dst, const short *src, int *consumed, int src_size, int dst_size, int update_ctx); int swr_rematrix_init(SwrContext *s); int swr_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy); #endif